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To say the detailed point?CodePudding user response:
There must be a master-slave table between the two tables associated fields, open the background database check,CodePudding user response:
With the selected item of the corresponding keyword lookup table.CodePudding user response:
New engineering is an empty table, such as choice above 10 kv power distribution device, then the empty table below, add norm, equipment, advocate material, such as entry, please the teacher help answer